MOSCOW - President-elect Vladimir Putin on Wednesday called NATO a relic of the Cold War but said he supported letting the alliance use a Russian airport as a supply hub in support of its mission in Afghanistan.Moscow is studying a request from NATO for use of facilities at an airport in the Volga River city of Ulyanovsk as a transit point for shipments of non-lethal supplies to and from Afghanistan by air, rail and road.Russia has allowed Afghan-bound NATO transport through its territory since 2009 as an alternative to convoys through Pakistan, which have been subject to militant attacks, but no permanent facility was involved."I consider NATO... a throwback to the Cold War era. It was created at a time when there was a bipolar system of international relations," said Putin, who has frequently criticized the alliance and its eastward expansion.